Sofa



FIG. 1 is a front perspective view of a sofa showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a side view thereof; the opposite side being a mirror image thereof. 

I claim, the ornamental design for a sofa, as shown and described. 